Credits
Original Work
Advanced Dungeons & Dragons 1st Edition Dungeon Master’s Guide
Gary Gygax
TSR, Inc., 1979
ISBN 0-935693-02-4
The Advanced Dungeons & Dragons 1st Edition Dungeon Master’s Guide (DMG) is the foundational document for the rules system used in Oath-Bound. This website exists because of the quality of that work. The debt is acknowledged without reservation.
Additional design contributions to Advanced Dungeons & Dragons (AD&D) 1st Edition: Dave Arneson, Rob Kuntz, Brian Blume, Tim Kask, and the broader TSR, Inc. team of the 1970s.
This Website
Oath-Bound GM Bible — Advanced Dungeons & Dragons 1st Edition Dungeon Master’s
Guide Overlay & Oath-Bound Rules Module
Mogadon
First issued: May 9, 2026
This website comprises two bodies of work: the Advanced Dungeons & Dragons 1st Edition Dungeon Master’s Guide Overlay (DMGO), which records the relationship between the DMG and the Oath-Bound rules system, and the Oath-Bound Rules Module (CRM), which expresses those rules in full.
Both the DMGO and the CRM, together with all associated world and campaign content, are original works produced independently of TSR, Inc. and its successors. No claim is made over the AD&D rules system or any TSR, Inc. intellectual property.